Overhead door



Feb. 17, 1948. F. KAISER OVERHEAD DOOR Filed Jan. 18, 1945 2 Sheets-Sheet 1 Zjnwwwtev 1 HEDEEICK KA SE F. KAISER OVERHEAD DOOR Feb. 17, 1948.

Filed Jar 1. 18, 1945 2 Sheets-Sheet 2 3mm 1 Emma/r KA/sEE Patented Feb, 17, 1948 A 2,436,006

UNITED PATENT OFFICE Frederickkaiscrelllkins main. minor to Better Bilt, Door Company, Egg Harbor, .Ni J.,v a c mor tionoi New Jersey Application. January v18, 1945, Serial No. 573,385 Claims. (0!. 160-491) y'lhe instant invention, relates tov doors and shaped bracket it, see Figures '1 and 6. A secmore Particularly 110a 1 of v r i p end horizontaltraclr i1 is positioned below and One of the primary objects oi the-inventionis imflbutting relationship to and in vertical alignthe construction of a door of the character inment with track 14, saidtracks being rigidly dicated having a plurality of hinged-panelaguidto, welded or othcrwisesecured to each other. Arouing tracks and door counterbalancing means, atetraok portion l8 connects vertical track 12 the tracks and counterbalancing means being so with horizontal track-i1. arranged relative to each otherand the door Each hinge ill includesia pintle ill having at opening as tooccupy a minimum of spacebot-h roller li Journaled thereon; As will be seen in vertically and laterally; Figure l. the uppermost: roller Ill rides on upper Still a further aim is to make a door of the horizontal track it while the other rollers ride type specified which will be of sturdy construcon vertical track 1 2, arcuatetrack portion i-B- and tion and embody simple and novel means: for horizontal track I]. both positioning the counterbalancingmeans in The counterbalancing means 0 for the door D an optimum position with respect to the door. vl5 comprises aichain 20, sheaves 2| and 22 anda panels and for attaching said means to the latter; coil spring 23. As will be seen in Figure. 1, one -The above and other aims and objects will end 24-01 spring 23 is secured toa vertically be apparent from the detailed d,escription. heredisposed angle, bracket, 25 as at 26, the other-end inafter appearing when taken in *coniunction' oi the spring terminatingin a U-shaped journal with the appended drawings to which reference .20 member Z'lrrotatably mounting sheave 22 on a is now made and in which shaftilxed in. said Journal member. A depending Figure 1 is a perspective viewshowing a porfixed support 29 rotatably supports sheave 2! tion of a door of they overhead type in. down'or and it will .be seen that the counterbalancing closed position in a door opening together with means 0 isin its entirety located below and :in the door counterbalancing means. alias viewed 2. vertical alignment with the horizontal tracks it from one side thereof; and I]; One end of chain 2Il-is. secured to sup- Figure 2 is an enlarged sectional view taken port 29 asat 30 by means of a hook 3i or the on line 2--2 of Figure 1; like, the chainthenpassing over sheaves 22 and Figure3 is an enlarged rear elevational view at It the other end of the chain being secured to the door panels and operating chain; a so the-lower corner of the lowermost panel P of- Figure 4 is an enlarged front elevational view the door D. in aimanner now to 'bedescribed. showing bracket means for attaching the chain A plate bracket-member 40 is fixed to a corner.

of the counterbalancing mechanism to a corner of-thelowermost-panel P of the door D on the rear of the door panels; v face ti ofsaidpanel .by -means of screws or the 'Figure 5 is a side elevational view, partly in like; Saidcornerbracketmember ill-comprises section, 01' the attaching means of Figure 4; and a flatportion It. a pair. of spaced outwardly pro- Figure 6 is an enlarged sectional view taken looting ears 42 and-43' in which is fixed, the shaft on line 6-6 of Figure 1. i I09, thevlatter.rotatablylournalling a roller Hi Referring to the drawings.- it-will be seen that Lowermost endot; chain Mari-s" fastened by means the reference character D designates saga-rage c1.- a clip. andcotter pin. 45 or the likev to ear door or the like operatively positioned in a door 43. By an inspection of Figures 1 and 3, it; will opening, said door being composed of a plurality be noted that chain 20 is at all times either in of hinged panels P, three panels being shown alignment with or inwardly or the tracks l2, ll connected to each other at their adjacent 10151. and I1. Consequently, by having the countergitudinal edges by means of hinges i0 mounted 45 balancing mechanism 0, in either the open or on the rear side ll of the door D. It will be closed position of the door D, below and in alignunderstood that the structure shown in the varment with tracks H and I! with the chain 20 of ions figures of the drawings is duplicated on the the mechanism arranged and fastened as indileft hand side of the door. Figure 1 showing the cated above, a minimum of space is required for right hand side. A vertically extending chanthe door operating means within the door opennelled track I! is positioned within'the door opening resulting in a maximum saving of both heading in spaced relation to the vertical edges i3 room and sideroom. Thus one of the primary of the panels P. The reference numeral ll deslgobjects of the instant invention is attained. nates an upper horizontal track secured to the. While the'invention has been described in de wooden ceiling jamb I! by means of spaced U- tall, it will be apparent to those skilled in the art desire to secure by Letters door opening, a pair of horizontal tracks extend ing rearwardly from the top of said opening, said tracks being rigidly connected to each other and positioned tical plane, a vertical track spaced from the vei tical edges of said panels and connected to the" a counter lowermost of said horizontal tracks,- balancing mechanism connected to said door and one above the other'in the samevem l5 spring-connected tosaid journal and a positioned below and in vertical alignment with said horizontal tracks, said door panels having rollers riding in said tracks.

2. An overhead door construction comprising a door having a plurality of pan'els-hingedly connected to each other and adapted to close a door opening, a pair of horizontal tracks extending rearwardly from the top of said opening, said tracks being rigidly connected to each otherand positioned one above the other in the same vertical plane, a vertical track spaced from the vertical edges of said panels and connected to the lowermost of said horizontal tracks, a counterbalancing mechanism connected to said door and positioned below and in vertical alignment with said horizontal tracks, said counterbalancing mechanism comprising sheaves, a spring and a chain connected to the lowermost of said door panels inwardly of said vertical track, and said door panels having rollers riding in saidtracks;

3. An overhead door construction-comprising a door having a plurality of panels hingedly connected to each other and adapted toclose a door opening, a pair of horizontal tracks extending rearwardly from the top of said opening, said tracks being rigidly connected to each other and positioned one above the other in the same vertical plane, a vertical track spaced from the vertical edges of said panels and connected to the lowermost of said horizontal tracks, a counterbalancing mechanism connected to said door and positioned below and in vertical alignment with said horizontal tracks, said counterbalancing mechanism comprising sheaves, one of said sheaves being supported by a fixed bracket and the other supported by a movable journal, a spring connected to said journal and a chain having one end connected to said bracket and riding over said sheaves, the other end of said chain being connected to a corner of the lowermost of said door panels inwardly of said vertical track, and said door panels having rollers riding in said tracks.

4. An overhead door construction comprising a door having a plurality of panels hingedly connected to each other and adapted to close a door opening, a pair of horizontal tracks extending rearwardly from the top of said opening, said tracks being rigidly connected to each other and positioned one above the other in the same vertical p1ane,-a vertical track'spaced from the vertical edges of said panels and connected to the lowermost of said horizontal tracks, a counterbalancing mechanism connected to said door and ;;positioned below and in vertical alignment with said horizontal tracks, said counterbalancing mechanism comprising sheaves, one of said sheaves being'supported by a fixed bracket and the other supported by a movable journal, a

chain having one end connected to said bracket and riding over"said"sheaves, a plate secured to the corner of the lowermost of said door panels, said chain having one end connected to said plate inwardly of said vertical track, and said door panels havingrollers riding in said tracks.

5.'An overhead door construction comprising a door having a plurality of panels hingedly connected to each other and adapted to close a door opening, a pair of horizontal tracks extending rearwardly from the top of said opening, said tracks being rigidly connected to each other and positioned one above the other in the same vertical plane, a vertical track spaced from the vertical edges of said panels and connected to the lowermost of said horizontal tracks, a counterbalancing mechanism connected to said door and positioned below'and in vertical alignment with said horizontal tracks, said counterbalancing mechanism comprising sheaves, one of said sheaves being supported by a fixed bracket and the other supported by a movable journal, a spring connected to said journal and a chain having one end connected to said bracket and riding over said sheaves, a plate secured to the corner of the lowermost of said door panels, said plate having a pair of spaced outwardly projecting ears, a shaft fixed in; said ears, said shaft having a roller rotatably' supported at one endthereof and of said ears inwardly of said vertical track, and said door panels having other rollers riding in saidtracks. Z? FREDERICK KAISER;

REFERENCES oI'rEn The following references ar e'ioi recordinthe file of this patent:

UNITED STATES PATENTS ridable in one of said tracks, one end of said chain being secured to one 

